January 2004
Intermediate to advanced
432 pages
11h 1m
English
Content preview from HP-UX 11i Internals
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Memory Windows
The memory windowing system was introduced to HP-UX 11.0 as a patch (PHKL_13810 and PHCO_13811) and is part of the HP-UX 11.i release. Figure 5-6 shows a greatly simplified example of a system VAS with memory windows implemented. To enable memory windows on a system, the kernel-tunable parameter max_mem_window must be set to the desired number of user windows. The kernel adds 1 to this value and initializes a memory-window array structure during system boot.
Figure 5-6. SHARE_MAGIC and Memory Windows
NOTE
Memory windows may only be implemented for 32-bit narrow application memory mapping.
The kernel pointer *memWindows directs us ...
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